Appendix138List of Safety SymbolsThe following table lists the meaning of the safety symbols labeled on the equipment.Symbol mark Approved stand‐ardsMeaningIEC60417No.5007"ON" (power)To indicate connection to the mains.IEC60417No.5008"OFF" (power)To indicate disconnection from the mains.IEC60417No.5009StandbyTo identify the switch or switch position by means of which partof the equipment is switched on in order to bring it into thestandby condition.ISO7000No.0434BIEC3864-B3.1CautionTo identify general caution when using the product.IEC60417No.5041Caution, hot surfaceTo indicate that the marked item can be hot and should not betouched without taking care.IEC60417No.6042ISO3864-B3.6Caution, risk of electric shockTo identify equipment that has risk of electric shock.IEC60417No.5957For indoor use onlyTo identify electrical equipment designed primarily for indooruse.IEC60417No.5926Polarity of d.c. power connectorTo identify the positive and negative connections (the polarity)on a piece of equipment to which a d.c. power supply may beconnected.---IEC60417No.5001BBattery, generalOn battery powered equipment. To identify a device for instancea cover for the battery compartment, or the connector terminals.IEC60417No.5002Positioning of cellTo identify the battery holder itself and to identify the positioningof the cell(s) inside the battery holder.---IEC60417No.5019Protective earthTo identify any terminal which is intended for connection to anexternal conductor for protection against electric shock in caseof a fault, or the terminal of a protective earth electrode.IEC60417No.5017EarthTo identify an earth (ground) terminal in cases where the isnot explicitly required.